Due to the small gap between the end mill and the tool holder, the tool may vibrate during the machining process. Vibration will make the cutting amount of the circumferential edge of the end mill uneven, and the cutting and expansion amount will be larger than the original value, which will affect the machining accuracy and tool life. However, when the width of the machined groove is too small, the tool can also be vibrated purposefully, and the required groove width can be obtained by increasing the amount of cutting and expansion, but in this case, the maximum amplitude of the end mill should be limited to less than 0.02mm , otherwise stable cutting cannot be performed. The less vibration of the end mill in normal machining, the better.
When tool vibration occurs, consider reducing the cutting speed and feed rate. If there is still a large vibration after both have been reduced by 40%, you should consider reducing the amount of cutting.
If there is resonance in the machining system, it may be caused by factors such as excessive cutting speed, low feed speed, insufficient rigidity of the tool system, insufficient workpiece clamping force, workpiece shape or workpiece clamping method. Dosage, increase the rigidity of the tool system, increase the feed rate and other measures.
